USGS Water-Year Summary 2020
11381500 Mill Creek near Los Molinos, CA
LOCATION - Lat 40°03'17", long 122°01'23" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.06, T.25 N., R.1 W., Tehama County, CA, Hydrologic Unit 18020156, on right bank, 4.5 mi northeast of Los Molinos, and 5.5 mi upstream from mouth.
DRAINAGE AREA - 131 mi².
- WSP 1315-A: 1929 (instantaneous maximum discharge). WSP 1931: Drainage area. WSP 2131: 1938 (instantaneous maximum discharge).
PERIOD OF RECORD - September 1909 to August 1913 (fragmentary), October 1928 to current year.
GAGE - Water-stage recorder and crest stage gage. Datum of gage is 384.25 ft above NAVD of 1988. Prior to September 1913, nonrecording gage at site 0.3 mi downstream at different datum.
EXTREMES FOR PERIOD OF RECORD - (Since water year 1929) Maximum discharge, 36,400 ft³/s, Dec. 11, 1937, gage height, 23.4 ft, from floodmarks, from rating curve extended above 14,000 ft³/s, on basis of step-backwater computation and slope-area measurement of peak flow; minimum daily, 52 ft³/s, Dec. 12, 1932.
PERIOD OF RECORD
CONTINUOUS WATER-QUALITY DATA:
WATER TEMPERATURE: Water years October 1998 to current year.